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Try playing back pictures you know were captured properly ( either with another properly working camera or with your camera before the problem with quality has appeared ). If the image is ok in playback but 'noisy' in capture mode then the CCD sensor is faulty /on its way out. Ask Canon if they repair CCD faults on this model free of charge.

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Televisions are unlike other consumer electronics products. Their setup and settings have a tremendous effect on how well they perform. The best TV on the market incorrectly setup will almost always look worse than a mediocre TV setup well.
Ideally, you'll get a setup disc to ensure the correct settings, but regardless, it's important to know what each setting actually does.
To get the ultimate performance out of your TV, a full calibration by an ISF Certified technician is your best option. Even if you go that route, it's good to know what the calibrator is adjusting. So here's a quick look at the basic settings every TV has, and what they do.
Please keep in mind, this is only a general guide in what each setting does, and rough idea how to set it. Correctly setting up a television is a completely different article.Where to start
Nearly all modern TVs have picture modes. These are labeled things like Standard, Cinema, Vivid, and so on. Cinema or Movie is often the most accurate setting, with all the controls set to offer an image close to what a director intended them to look like. Most people aren't used to an accurate image like this, and to them the TV may appear reddish, soft, and possibly dim. Technically, it isn't. Other picture modes like Vivid or Dynamic are programmed to "pop" on a store sales floor with an overenhanced, blue image. Because most people don't change any of their TV's settings, this has resulted in most people thinking a TV should look blue.
The choice is yours, of course, but we here prefer an accurate image and suggest you at least try it for a few days. Once you get used to it, you'll never go back. Check out What's the best picture mode? for more info.
Regardless, all TVs need tweaking to look their best. Here's what the main controls do.Backlight
Only LCDs have this control (though not all of them). This is a direct control of how bright the image is. Setting this lower will reduce eyestrain, and save a little on electricity. Before you adjust Contrast to make the image brighter, try here first. Check out LED LCD backlights explained for more on this.
Some plasmas have a control that drives the pixels harder, which in some ways acts similar to a backlight control. Samsung's name for this on their plasmas is Cell Light.Contrast
Sometimes labeled "Picture." This control makes the image brighter...up to a point. Every television has a maximum light output. Once you reach this point, increasing the Contrast control further actually degrades the image. Correctly set, you would see a fluffy cloud in a bright sky. Set too high, you'd see a blotch of white instead. As mentioned above, try setting the overall light output of an LCD with the Backlight control first (if available). Then adjust the Contrast.Brightness
This controls how dark the dark areas of the image are, again, to a point. Every TV has a minimum light output. Once you reach this point, decreasing the Brightness control starts removing "shadow detail." Correctly set, you'd see all the detail in a black leather jacket at night. Set too low, and it would be a black area on a black area, probably with a head sticking out of it. For more information on how the contrast, brightness and backlight settings interact, check out my article on contrast ratio.Color
Can be thought of as color saturation. Setting this too high will make everything look cartoony. Setting it too low will make for an expensive black-and-white HDTV.Tint
Rarely will you need to adjust tint, a vestigial control left over from the CRT "tube" TV days. It gives a green or magenta shade to the image.

Bootup your computer and display your Windows Desktop. Make sure yourmonitor stays on for at least half an hour before you begin, so that itis properly warmed up.

Seta pure black image on the monitor so you can adjust the brightness. Toget a pure black image, do the following: Choose Start, then ControlPanel, then Display. This will open the Display Properties dialog box.Click the down arrow next to the representation of the desktop color inthe Color field. Choose black from the color palette, then click OK.

Maximizethe Brightness control on your monitor, then slowly reduce it until theblack of the image perfectly matches the black at the edge of thephysical screen. This puts the brightness at the proper setting.

Open a screen with a plain white background soyou can adjust the contrast. One of the best ways to do this is to open aword-processing document without any text in it. Gradually reduce the contrastsetting of your monitor until the white area of the screen begins to lookslightly gray or off-white. Then gradually increase the contrast until thewhite area on your monitor is pure white. This will give you the proper whitebalance. Now you've got your monitor ready for peak performance.

Did someone make changes in the Picture Menu and now the I.S. is not working?

Sometimes the changes the IS makes are so small you cannot notice, but the I.S. is working. LG’s “Intelligent Sensor” uses 4,096 sensing steps to evaluate its surroundings. Using asophisticated algorithm, the LG processes picture quality elements including brightness, contrast, color,sharpness and white balance. The result is a picture optimized for its surroundings, more pleasing towatch and which can also save up to 50% in power consumption.1. You can go into the Menu, Picture Menu, and then Advanced.From there you can fine tune all the picture settings.2. You can also try a Picture Reset. Inside the Picture Menu, you can perform a Picture Reset.The Picture Reset returns the “selected picture mode” back to the default factory setting.3. If all the above fails then the problems are between the Main board (process the picture parameters) and the Intelligent Sensor (is reporting the surroundings to the main board).Either one of these issues will require new parts.Good Luck.

In general, you're much better off shooting in color and converting to black-and-white using a photo editor on a computer. Once the conversion is done by a camera, you're stuck with it. Doing it on a computer gives you much more control over things like contrast and brightness.

Contrast ratio is the ratio between black and white. So low contrast ratio (5000:1) means you can;t see the screen so well in a bright room (where there's a lot of sunlight) A higher contrast ratio (20000:1) means the screen is brighter so easier to see in bright rooms.

Pixel pitch refers to the distance between pixels. The lower the pixel pitch, the sharper the image

Flyback transformers usually have 2 adjustable rods - 1 is for focus the other is for screen (G2) voltage. try turning Clockwise the Screen adjust with brightness-contrast at max. Till you see white diagonal lines, then go back until the lines disappear - then tune the brightness to your desired level.